Cutting-block for paper-trimming machines.



V E. L. LINDSEY. CUTTING BLOCK FOR PAPER TRIMMING MACHINES. APPLIUATION FILED MAR. 20, 1911.

1,005,439. Patented Oct. 10, 1911.

Q COLUMBIA PLANOGRAPH CD.,WASHINGTON. D. c. i

FFTQE.

EMERY L. LINDSEY, 0F BELLEVUE, KENTUCKY.

CUTTING-BLOCK FOR PAPER-TRIMMING MACHINES.

Specification of Letters Patent.

Patented Oct. 10, 1911.

Application filed March 20, 1911. Serial No. 615,746.

To all whom it may concern:

Be it known that I, EMERY L. LINDSEY, a citizen of the United States, and a resident of the city of Bellevue, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Cutting-Blocks for Paper-Trimming Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

My invention relates to cutting blocks for the knife or knives in a paper trimming machine, for which it is usual to furnish a block of wood suitably clamped and supported on the machine to serve as a surface against which the knives may cut and upon which the paper piles to be trimmed are suitably clamped for the action of the knives. A single block or slab of wood is usually provided for this purpose, said block generally having its grain at right angles to the cutting surface, and inasmuch as in such machines it is customary to trim both the front and side edges of the pile before releasingthe pile, the knife or knives in passing through the material and coming in contact with the cutting block leave lines of cut crossing at the corners at right angles. In a short time, as the sizes of the piles of paper to be trimmed are changed, the cutting surface becomes marred and broken with cross lines; chips are cut out of the surface and the paper at the bottom of the piles cannot be trimmed smoothly and evenly. In the wood blocks which constitute a single slab or plate in the ordinary arrangement, the grain of the wood runs parallel with the lines of cut in one direction, and consequently after a very short time, deep lines of cut appear on the surface of the wood, and sections of the surface, particularly where crossed by the lines of cut at right angles are chipped out, rendering the cutting block useless.

It is to obviate these disadvantages and to furnish a cutting surface that shall be much more economical and less liable to destruction under the action of the knives that my invention is directed, and it consists essen tially in the substitution for the single block, of a cutting surface made up of sections of wood with the grain of the wood for all the sections parallel with the cutting surface of the block and so arranged that both for the body of the front and side cutting surfaces, the grain of the wood shall also be transverse the lines of out, while at the corners where the lines of the cuts cross at right angles, sections of wood are provided in which the grain runs diagonally of both out lines while also parallel with the surface. In my construction, moreover, the main body of the cutting block upon which the piles of paper are placed and clamped, and which lies within the front and side edges of the pile, is permanently secured in the frame, so that when it becomes necessary, after long continued use, to renew the sections which have been subjected to the action of the knives and have ultimately become marred and broken, only these particular sections need to be replaced.

In the drawings, Figure 1 is a top plan view of my improved cutting block. Fig. 2 is a longitudinal section of the same. Fig. 3 is a bottom plan view.

1 is a met-a1 plate, upon which the wood flitting surface is mounted. This metal plate is provided with the flanges 2, 3, 4: and 5, for the front, back and sides of the plate, and with transverse flanges 6, 6, to give strength to the supporting plate. The plate is also provided with the front corner portions 7, 7, and the rear projections 8, 8.

9 is the front clamping plate, which fits between the corners 7, 7.

10, 11, are the side clamping plates, fitting between the corners 7, 7, and the respective extensions 8-, 8, of the main body plate. The front plate 9 is adjusted and held by the bolts 12, 12, which take through the plate and are screw threaded into the front flange 3, while the side clamping plates 10 and 11 are drawn together, adjusted and held by the long bolts 13, 13, which take through suitable openings in the clamping plate and the cross flanges of the body plate and are screw threaded into the opposite clamping plate.

The cutting and supporting surface for the paper pile to be trimmed is formed of a body section of wood 14, of the proper thickness, which is permanently secured in place by screws 15. For the portions of the block that are to receive the cutting knives, I provide the sections of wood 16, 17, for the sides, in which the grain of the wood runs parallel with the top surface of the sections and also transverse the cutting plane; and for the front of the paper pile, I provide a similar section of wood 18, in

which the grain of the wood also runs transverse of the cutting plane while also parallel with the surface. For the corners between the front section 18 and the side sections 16,

17, I provide the corner blocks 19 and 20, with the grain of the wood in these corner blocks running diagonally and also parallel with the surface.

All of the various sections of wood making up the complete block are of the same thickness, so as to make a smooth and level surface.

In order to place the blocks in the frame after securing section 14 by the screws, the

7 sections l6, l7, 18, 19 and 20 are located in place, and the clamp plates 9, 10 and 11 tightened by the bolts 12, 12, and 13, 13, to hold the sections rigidly in place.

Inasmuch as the bolts 12 and 13 are located below the grasping surface of the clamp plates, as the clamp plates are tightened, there would be a tendency to open up for the upper edges of the clamp plates, and for this reason I make use of the set screws 21, 21, for the front plate, and 22, 22, for the side plates, which set screws bear against the plate flanges 2, 3 and 4, and by tightening the set screws the proper vertical alinement for the clamp plates is obtained.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A cutting block for paper trnnmlng 111th chines, comprising a metal frame, with sec-- tions of wood mounted therein for the front and side lines of cut, and wood corner pieces to fill out the corners, withthe grain of the corner pieces running diagonally of the lines of cut and also parallel with the surface of the block.

2. A cutting block for paper trimming machines, comprising a metal frame, with sections of wood mounted therein for the front and side lines of cut, with the grain of the wood parallel with the top surface of the block and transverse the line of cut, and wood corner pieces to fill out the corners, with the grain of the corner pieces running diagonally of the lines of cut and parallel with the top surface. 4

3. A cutting block for paper trimming machines, comprising a metal frame, with a body section of wood permanently secured therein, a front section and side sect-ions of wood to fill out the sides and front, with separate sections of wood to fill out the corners, the front and side sections having the grain of the wood parallel with the top surface of the block andtransverse the lines of out, and the corner sections having the grain diagonal the intersecting lines of cut and also parallel with the top surface, with clamp plates to lock all of the sections together. A

EMERY L. LINDSEY. Attest:

MAnsToN ALLEN,

K. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

